Mr. Dursley hummed as he picked out his most boring tie for work, and Mrs. Dursley gossiped away happily as she wrestled a screaming Dudley into his high chair. None of them noticed a large, Tawny owl flutter past the window. At half-past eight, Mr. Dursley picked up his briefcase, pecked Mrs Dursley on the cheek, and tried to kiss Dudley goodbye but missed, because Dudley was having a tantrum and throwing his cereal at the walls. Mr. Dursley left the house and got into his car and backed out of Number 4's drive. It was at the corner of the street that he noticed the first sign of something peculiar- a cat reading a map. For a second, Mr. Dursley didn't realize what he had seen- then he jerked his head around to look again. There was a tabby cat standing on the corner of Privet Drive, but there wasn't a map in sight. What could he have been thinking of? It must have been a trick of the light. Mr. Dursley blinked and stared at the cat. It stared back. As Mr. Dursley drove around the corner and up the road, he watched the cat in his mirror. It was now reading the sign that said Privet Drive- no, it was looking at the sign; cats couldn't read maps or signs. Mr. Dursley gave himself a little shake and put the cat out of his mind. As he drove toward town he thought of nothing except a large order of drills he was hoping to get that day...
The original story is called Harry Potter and the Philosophers/sorcerers stone by J.K. Rowling